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7Χ3

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7Χ3 8Χ3
#7Χ3

Description

Russia EN 7Χ3 Carbide for cutting tools and 7Χ3 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: 7Χ3
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy 7Χ3 EN Russia Carbide for cutting tools
6Χ4Μ2ΦC
4Χ3ΒΜΦ
4Χ3ΒΜΦ
4Χ4ΒΜΦC
4Χ4ΒΜΦC
3Χ3Μ3Φ
3Χ3Μ3Φ
6Χ6Β3ΜΦC
6Χ6Β3ΜΦC
7Χ3

Chemical composition(mass fraction)(wt.%) of the 7Χ3

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%) W(%) Cu(%) Ti(%)
0.65-0.75 0.15-0.35 0.15-0.40 ≤0.030 ≤0.030 3.20-3.80 ≤0.35 ≤0.20 ≤0.15 ≤0.20 ≤0.30 ≤0.03

Mechanical Properties of steel grade 7Χ3

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
786 (≥) 576 (≥) 32 33 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade 7Χ3

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
33 - -     0.41 -  
731 473 - 43.3 122   -  
754 - 13 13.2   224 444

Heat Treatment of steel grade 7Χ3

Heat treated : 1823°C - 1589°C

Technological Curves of steel grade 7Χ3

Cross Reference Table (Equivalent Grade) of 7Χ3

Grade Standard Country Application
7Χ3 EN Russia Carbide for cutting tools
7Χ3 EN Russia Carbide for cutting tools
7Χ3 8Χ3
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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